Pith Number

pith:H4QPY343

pith:2013:H4QPY343CAM36T6JG2GHBUMXKP

not attested not anchored not stored refs pending

Enumeration of irreducible contact graphs on the sphere

Alexey Tarasov, Oleg Musin

arxiv:1312.5450 v1 · 2013-12-19 · math.MG

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{H4QPY343CAM36T6JG2GHBUMXKP}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-18T03:04:14.756009Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3f20fc6f9b1019bf4fc9368c70d19753eaa31b8f76dc816a445db8623726f984

Aliases

arxiv: 1312.5450 · arxiv_version: 1312.5450v1 · doi: 10.48550/arxiv.1312.5450 · pith_short_12: H4QPY343CAM3 · pith_short_16: H4QPY343CAM36T6J · pith_short_8: H4QPY343

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/H4QPY343CAM36T6JG2GHBUMXKP \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 3f20fc6f9b1019bf4fc9368c70d19753eaa31b8f76dc816a445db8623726f984

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "af0b8b338413050bdc5fb0ff85763b261c88d4dbe9ef8ad2f6a9e1b8af17e250",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.MG",
    "submitted_at": "2013-12-19T09:16:13Z",
    "title_canon_sha256": "8625d4b091a68877615ed08994d01eadac40572335d95399a4b5051387d6ab60"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1312.5450",
    "kind": "arxiv",
    "version": 1
  }
}